<template>
 <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <!--2. 为ECharts准备一个具备大小（宽高）的Dom -->
        <div id="main" style="width: 700px;height:400px;"></div>
    </el-card>
 </div>
</template>
<script>
//1.导入echarts
import echarts from 'echarts'
import _ from 'lodash'
 export default {
     data(){
         return{
            options: {
                title: {
                text: '用户来源'
                },
                tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross',
                    label: {
                    backgroundColor: '#E9EEF3'
                    }
                }
                },
                grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
                },
                xAxis: [
                {
                    boundaryGap: false
                }
                ],
                yAxis: [
                {
                    type: 'value'
                }
                ]
            }
         }
     },
     created(){

     },
     async mounted(){
        //3. 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));
        //4.获取数据
        const {data:res}=await this.$http.get('reports/type/1')
        if(res.meta.status !==200){
                return this.$message.error('获取折线图数据失败！')
        }
        //5. 指定图表的配置项和数据
        const result= _.merge(res.data,this.options)
        //6. 展示数据
        myChart.setOption(result)
     },
     methods:{

     }
 }
 </script>
<style lang="less"   scoped>
</style>